HCD404669 Datasheet | Hitachi Semiconductor

Description The HD404669 Series microputers incorporate a DTMF generation circuit, two parators, and a serial interface on chip. They also provide input and output pins with large current handling capacities. Thus they are 4-bit single-chip microputers that are optimal for use in multifunction telephones, cordless telephones, and other munications equipment. HD404669 Series microputers have a 32.768 k Hz sub-oscillator for realtime clock use, providing a time counting facility, and a variety of power supply modes to reduce current drain. The HD407A4669 is a ZTAT™ microputer with on-chip PROM that drastically shortens development time and ensures a smooth transition from debugging to mass production. (The PROM programming specifications are the same as for the 27256 type.) ZTAT™: Zero Turn-Around Time ZTAT is a trademark of Hitachi, Ltd. Features - 1,152-digit × 4-bit RAM - I/O pins: 47  High-current I/O pins (source: 10 m A max.): 4  High-current I/O pins (sink: 15 m A max.): 5 - Timer counters: 3 - Input capture: one 8-bit channel - Timer outputs: 2 (with PWM output capability) - Event input: 1 (edge-programmable) - Clock synchronous 8-bit serial interface: 1 - DTMF generation circuit - parator: 2 channels - System clock oscillator Ceramic oscillator, crystal oscillator, or external clock operation possible HD404669 Series - Subsystem clock oscillator 32.768 k Hz crystal oscillator for realtime clock use - Interrupts  External: 5 (including 3 edge-programmable)  Internal: 4 - Subroutine stack: max. 16 levels including interrupts - Low-power modes: 4 - System clock division software switching (1/4, 1/8, 1/16, 1/32) - Instruction execution time Min. 1 µs (f OSC = 4 MHz, 1/4 clock division) Min. 0.5 µs (f OSC = 8 MHz, 1/4 clock division) - Operating voltage 1.8 V to 5.5 V 2.2 V to 5.5 V (ZTAT™) Ordering Information Type Mask ROM (standard version) Product Name HD404668 Model Name HD404668H ROM (Words) 8,192 RAM (Digits) 1,152 Package 64-pin plastic QFP...